Welcome to NICO and the Infiniti family Jonathan!
Infiniti issued a TSB (technical service bulletin) to announce that the lens is available separately - so this must be a common issue. If you're still under warranty you may be able to get this taken care of at no charge. If you need to buy one, check with http://www.everythinginfiniti.com
- you'll probably want to call.
For reference, the part number for the lens is 24813-EH10A, and if you need the metallic cover that fits over the lens has a part number of 25812-EH10A